none stop shotdown and reboot

[YLW561]

Does anyone can help please- My all in one TouchSmart keeps on restart and does not boot up

[A_Gayathri]

Hi @YLW561,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are facing an issue with your HP TouchSmart 420-1100t CTO Desktop PC is experiencing a continuous reboot cycle. 

Here are some steps you can take to troubleshoot the issue:
 

Perform a Hard Reset:

• Turn off the computer and unplug it from the power source.
• Remove the battery (if applicable).
• Press and hold the power button for about 15-20 seconds to discharge any residual power.
• Reconnect the battery (if removed) and plug the power cord back in.
• Turn on the computer.

Check for Hardware Issues:

• Ensure that all internal components (RAM, hard drive, etc.) are properly seated. You may need to open the case to do this.
• Disconnect any external devices (USB drives, printers, etc.) and try booting again.

Boot into Safe Mode:

• Try booting into Safe Mode to see if the system starts successfully. To do this:
  • Turn off the computer and turn it back on.
  • As soon as it starts, repeatedly press the F8 key until you see the Advanced Boot Options menu.
  • Select "Safe Mode" and press Enter. If it boots, there may be a driver or software issue.

Check for Overheating:

• Overheating can cause continuous shutdowns. Ensure that the vents are clear and that fans are functioning properly.

Run Hardware Diagnostics: HP PCs - Testing for hardware failures

• If you can access the BIOS or UEFI settings, look for an option to run hardware diagnostics. This can help identify failing components.

Restore to Last Known Good Configuration:

• If you can access the Advanced Boot Options, you may also see an option for "Last Known Good Configuration." This can help if a recent change caused the issue.

Reset BIOS to Default Settings:

• Enter the BIOS setup (usually by pressing F10 during startup) and reset to factory defaults.

Check Power Supply:

• A failing power supply can cause rebooting issues. If possible, test with another power supply.

Refer to this document: HP TouchSmart 420-1100 Desktop PC series User manual

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

[YLW561]

Hello Gaya1239:

First of all, thank you for your warm welcome and your time, big thank to your extensive instructions.

It all started 2weeks ago, my TouchSmart was on, all of sudden everything went down, I pushed the power to turn it back on, feels like it's going, but off again (there is a light under DVD drive will just be tripped and my computer off again, didn't even boot up) 

I went on HP website, put in all info, and found out my 420-1100t was retired and refer me to here- Community, so I tried everything, bought a power cord, it didn't work, so I opened the back, air blow all dust off(plugged the power in, it still doing the same thing) then I replaced the CMO Battery, follow everything to the T, pressed power button for 15seconds, every time I disconnected the power.

After CMO battery change, I followed every article, press f2, or f10 even the windows +b... none of them works, it still powers on but shots off and back on again right of way.

I did click on the info in your reply, and don't know how to run the Testing for Hardware Failure? do I download it to a external drive then connects to 420-1100t? Since my 420 may have hardware problems.

Again, Thank you so much, hope to hear from you again.

Best Regards, YLW561

[A_Gayathri]

Hi @YLW561,

Thank you for your response, I appreciate your efforts. As the issue persists, I am sorry to hear that I'm sending out a private message to assist you with the next course of action. 

Please check your Private message icon on the upper right corner of your HP Community profile Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link.

I hope this helps! Keep me posted for further assistance.

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!