Dell XPS420 Freezes after being in sleep mode

This can be a cooling problem. You should heck your fan is working properly and the air is circulating correctly in the case.
This can also happen if you upgraded some components. Maybe the power of you power supply can be not sufficient for system use.

goto safe mode and remove the router software from start up ? check on the screen to find which button to press normally it's f7 or f9 but it depends on the model

Hi
If your system's power light blinks amber, it means the computer is receiving electrical power, but an internal power problem might exist.

Do the following to tackle this issue:

• If applicable, make sure that the voltage selection switch which is at the rear of your system matches AC power in your area.
• Ensure that the power cable is securely connected to system board.

Here are links with pictures to assist you in opening the system and reconnecting the internal cables.
Please follow safety instructions before you perform these tasks. Here is a link, which gives you complete safety instruction.
http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/parts.htm#wp1372453
http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/parts.htm#wp1372490


Next is to see the system board design. Here is the link.
http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/parts.htm#wp1402834

and if you wish to research a bit more here is the link,
http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/trouble.htm#wp1076480
http://support.dell.com/support/edocs/systems/xps420/en/OM/HTML/trouble.htm#wp1097292


Here you will find complete manuals for further research
http://support.dell.com/support/edocs/systems/xps420/

If this does not resolve the issue, then the motherboard or processor is faulty and you need to get it replaced, so if your system is within warranty why pay extra, get it replaced from Dell. Else contact a local tech and he'll help you out.

Please rate as per the assistance level. Thanks :)

During when does your computer shutdown? Please check the diagnostic lights at the back as well which ones have light on it during the time it would shutdown.

Since you said that the light is blinking yellow it just says that your power supply is running outside its normal operating range. So most likely you would need a change of power supply. Maybe a higher wattage would be better.

see if this info helps narrow down the failure

http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Hibernate problems are generally associated with the Video Driver. Suggestions:

1. Update the BIOS to the current release. Here is the latest for the 1645. http://support.dell.com/support/downloads/driverslist.aspx?c=us&cs=04&l=en&s=bsd&ServiceTag=&SystemID=STUDIOXPS1645&os=WV64&osl=en&catid=&impid=
2. Update the video driver.

Need to test and isolate where it exactly freezes? After dell logo, after windows logo or while inside windows? Now, if it only freezes inside windows try to turn off your windows updates and antivirus first and check if still freezes, if yes then try booting in safe mode, reboot system then keep tapping on f8 once dell logo appears. Check if laptop keeps freezing in safe mode. Please let me know.

Go to Dell's website and seek tech help

go to disk management and inicalize the drive

it most likely doesnt run on windows me so that theory is out.Take it to dell or call someone to fix it

-CG