I have a Dell Inspiron 6400 laptop, 1.5 years old. I have been having some VGA problems since 6 months: laptop hanging due to infinite loop caused by the VGA process (ati2dvag). But it was gone since 3 weeks.
Now the Laptop isn't booting, yesterday it gave the same symptoms but after waiting for 10 seconds i saw the Post screen and it booted normally. But now it doesn't, I get this after hitting the power button:
Power light turns on. All fans run normally. Nothing on monitor, absolutely black. HDD led lights initially at startup for about 1 second and doesn't light up again no matter how long I leave the Laptop. HDD spins like normal. DVD writer led's come on, checks for media present and spins up when it is like normal. No POST beeps at all.
... and that's the state it just stays at, fans running, HDD whirring faintly, no HDD light, power light on, blank screen until I press the power button to turn it off.
Basically, I think it is the VGA but how to check this to be sure? The laptop is out of warranty, so I don't mind disassembling the Laptop. If you have any ideas please let me know. DO you think that removing the CMOS battery might help?
Many thanks to any help