We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
Contact Forum Editor

Send an email to our Forum Editor:


PLEASE NOTE: Your name is used only to let the Forum Editor know who sent the message. Both your name and email address will not be used for any other purpose.

Tech Helproom


It's free to register, to post a question or to start / join a discussion


 

Compaq Laptop: Not booting: Black screen: No BIOS


faithhealer

Likes # 0

My 4 years old Compaq Presario c700 (C794) laptop is not booting up. Does not go into BIOS, and does not even show the message “Press F10 to enter BIOS” etc.

  • I see a clear black screen (but has backlit and I am able to adjust the brightness using Fn keys). Tried on the desktop monitor, it is black too.

  • The HD is running intermittently, all LEDs are on, and the fan is running.

  • Windows is not booting up, there is no log on sound. WIFI light is also orange, it becomes green after booting is complete. HD activity is on but it is not as much to boot up Windows 7.

Troubleshooting I did till now:

  • Hard reset by holding down the power button several times.
  • Cleaned RAM and placed it in another slot.
  • Removed the power and battery and kept it overnight.
  • Tried on the desktop monitor, it is black too.

This happened all of a sudden. I did not do any BIOS updates or anything that normally causes these kind of problem. I learned from some forums that an exhausted CMOS battery can cause it. Is it true? In this case, can you please give the location of the CMOS battery in these laptops?

What are the other measures I can take?

Like this post
faithhealer

Likes # 0

Thanks for the manual.

I thought it could be the Video card, but there is no sign of Windows booting up. I tried another monitor, it was black too.

Like this post

Reply to this topic

This thread has been locked.



IDG UK Sites

Samsung Galaxy S6 release date and specs rumours: When will the Galaxy S6 come out?

IDG UK Sites

How to win iTunes Festival 2014 tickets: See Pharrell Williams, Sam Smith, Kylie & more live, for...

IDG UK Sites

Microsoft's all or nothing bet on Windows Phone is the best way forward

IDG UK Sites

Google adds better type rendering to its Chrome browser on Windows