Start with the basics before you dig deeper

Most HP computer problems can be solved by restarting, checking your power connection, and making sure Windows is up to date. Before you open the case or reinstall anything, try these three things in order: restart your computer, unplug the power cable for 30 seconds and plug it back in, then go to Settings > Update & Security > Windows Update and install any pending updates. If your problem is still there after that, the next step depends on what is actually broken.

The rest of this guide walks you through the most common issues HP owners face and what to do about each one. Some fixes you can do yourself. Others need a technician or a replacement part from HP.

Key Takeaways

  • Restart your computer and check for Windows updates before trying anything else—this solves about half of all reported problems.
  • If your HP is running slowly, check Task Manager to see which programs are using the most memory and disk space, then uninstall the ones you do not need.
  • Overheating is usually caused by dust blocking the vents; you can clean them yourself with compressed air, but do not open the case if your warranty is still active.
  • If your screen is black but the computer is on, try connecting an external monitor to see whether the problem is the display or the graphics card.
  • HP's built-in recovery tools can reinstall Windows without losing your files, and this fixes most software-related crashes.

Your computer is running slowly or freezing

Open Task Manager by pressing Ctrl + Shift + Esc. Click the Processes tab. Look at the CPU and Memory columns—whichever program is using the most of either one is slowing you down. If it is a program you do not use, right-click it and select End Task, then uninstall it through Settings > Apps > Apps & Features.

If no single program is the culprit, your hard drive may be full. Go to Settings > System > Storage and look at the bar at the top. If it is mostly full (over 80 percent), delete files you do not need or move them to an external drive. Windows needs free space to run smoothly. You can also run Disk Cleanup: press Windows key + R, type cleanmgr, and follow the prompts to delete temporary files.

If your computer is still slow after closing programs and freeing up space, your hard drive itself may be failing. HP computers with solid-state drives (SSDs) rarely have this problem, but older models with traditional hard drives do. You will hear clicking or grinding sounds if this is happening. At that point, you need to back up your files and have a technician replace the drive.

Your HP is overheating or shutting down unexpectedly

Overheating is the most common reason an HP computer shuts itself off. Feel the vents on the bottom and sides of your laptop or the back of your desktop—if they are hot or blocked by dust, that is your problem. Dust buildup prevents air from cooling the components inside.

Use compressed air to blow out the vents. Hold the can upright, use short bursts, and keep the nozzle a few inches away from the vents. Do this outside or in a well-ventilated area because dust will fly everywhere. If you have a desktop, you can also open the side panel and blow air across the internal components, but only do this if your warranty has expired—opening the case voids the warranty on most HP models.

After cleaning, restart your computer and monitor the temperature. read a free tool like HWiNFO to check your CPU temperature in real time. Most HP processors should stay below 80 degrees Celsius during normal use. If your computer is still overheating after cleaning, the cooling fan may be failing or the thermal paste between the CPU and heatsink may have dried out. Both of these require a technician.

Your screen is black but the computer is on

If you can hear the computer running and see lights on the keyboard or case, but the screen is black, the problem is either the display itself or the graphics card. The fastest way to tell which one is broken is to connect an external monitor with an HDMI or DisplayPort cable. If the external monitor shows your desktop, your laptop screen or monitor is broken. If the external monitor is also black, your graphics card is the problem.

If your screen is broken, you can still use your computer by keeping the external monitor plugged in. If you want to repair the screen, contact HP support with your model number—they can tell you the cost of a replacement screen and whether it is worth fixing versus replacing the computer.

If your graphics card is the problem, the computer may still be usable with the external monitor, but games and video editing will not work properly. Graphics card failure usually means the card itself needs to be replaced, which is a job for a technician. On some HP laptops, the graphics card is soldered to the motherboard and cannot be replaced separately.

Your HP will not turn on at all

Check the power cable first. Make sure it is plugged into both the wall outlet and your computer, and try a different outlet in case the first one is broken. If you have a laptop, plug it in and wait five minutes—sometimes the battery is completely drained and needs time to charge before the computer will turn on.

If the power cable is connected and the computer still will not turn on, press and hold the power button for 30 seconds, then release it and try turning it on normally. This forces a complete shutdown and can fix problems where the computer is stuck in sleep mode or a failed startup.

If nothing happens after that, the power supply may be broken. On a desktop, you can test this by trying a different power cable if you have one. On a laptop, you can try a different charger if someone nearby has the same model. If a different power cable or charger does not work, the power supply or charging circuit inside your computer has failed and needs to be replaced by a technician.

Your computer keeps crashing or showing error messages

Write down the exact error message you see, including any error codes. Search for that message online along with your HP model number—often other users have reported the same problem and posted the solution.

If you see the same error repeatedly, try reinstalling Windows using HP's built-in recovery tool. This keeps your files but replaces the operating system. Go to Settings > System > Recovery and click Reset this PC. Choose Keep my files. This process takes 30 minutes to an hour and fixes most software crashes.

If the error happens during startup before Windows fully loads, restart in Safe Mode. Turn off your computer, turn it back on, and press F2 or F10 repeatedly as it starts (the key varies by HP model—check your startup screen). Once in Safe Mode, run Windows Update and Disk Cleanup as described earlier. Restart normally and see if the error is gone.

Your HP is making strange noises

A clicking or grinding sound usually means the hard drive is failing. Back up your files when ready to an external drive or cloud storage. Do not wait—a failing hard drive can stop working completely without warning. Once your files are safe, contact HP or a local technician about replacing the drive.

A high-pitched whining or buzzing sound usually comes from the cooling fan. If the sound is constant and loud, the fan bearing may be wearing out. This is not an emergency, but the fan will eventually fail. You can continue using the computer as long as it is not overheating (check the temperature as described earlier). When the fan does fail, a technician can replace it.

A clicking sound from inside the case that is not the hard drive may be a loose component. If you are comfortable opening your computer, you can look inside to see if anything is visibly loose or disconnected. Otherwise, have a technician check it.

Your HP has a virus or malware

Run a full scan with Windows Defender, which is built into Windows. Go to Settings > Update & Security > Windows Security > Virus & threat protection and click Scan options. Select Full scan and click Scan now. This takes 30 minutes to an hour depending on how much is on your drive.

If Windows Defender finds and removes threats but your computer is still behaving strangely, read Malwarebytes (the free version is fine) and run a scan with that as well. Some malware hides from Windows Defender. Malwarebytes catches different threats, so running both gives you the best chance of removing everything.

If your computer is so infected that it will not start normally, restart in Safe Mode (press F2 or F10 during startup) and run the scans from there. Malware often cannot run in Safe Mode, which gives the security tools a better chance of removing it.

Frequently Asked Questions

When should I call HP support instead of fixing it myself?

Call HP if your computer will not turn on, if you hear grinding sounds from the hard drive, if the screen is physically cracked, or if you are not comfortable opening the case. These problems usually need a replacement part. If your computer is still under warranty, HP may repair or replace it for free. Check your warranty status at hp.com by entering your serial number.

How do I find my HP model number?

On a laptop, look on the bottom or inside the battery compartment. On a desktop, check the back panel or the side of the case. You can also find it in Windows by going to Settings > System > About and looking for System Model. The model number usually starts with letters like Pavilion, Envy, or ProBook followed by numbers.

Is it safe to open my HP computer myself?

Opening the case voids the warranty on most HP models, so only do it if your warranty has expired or if you are comfortable losing coverage. If you do open it, ground yourself first by touching a metal part of the case to avoid damaging components with static electricity. Take photos before you disconnect anything so you remember how to put it back together.

What is the difference between restarting and shutting down?

Restarting turns the computer completely off and back on, which clears the memory and resets all running processes. Shutting down turns it off but does not turn it back on. Restarting is more powerful for fixing problems because it gives everything a fresh start. Always restart before trying other fixes.

Can I fix my HP if it is making a clicking sound from the hard drive?

No—a clicking hard drive is failing and cannot be repaired. Back up your files when ready to an external drive or cloud storage, then contact HP or a local technician about replacing the drive. Do not keep using the computer for important work because the drive can fail completely without warning.