Alrighty, I have here three identical CQ50 laptops. All three have the same hardware, Celeron Processors, 2gb ram, 120gb hdds.
This one here, does not want to boot. When i turn it on, it shows the compaq logo, then a blank screen. i.e. The backlight is on, but no video, no cursor, no nothing. As if it stalls after post. Will not boot from harddrive/windows bootable cd/ Dos bootable cd/ Ubuntu bootable USB.
I have swapped over all of its parts, processor, ram, hard drive, cmos battery to a working unit, and they work just fine. I have tried doing the hard reset, still the same blank screen. Also it will not let me go into bios sometimes. Sometimes it does. I can still press ESC and do the memory test and the hard drive test, its all fine by then, but when i select boot, it shows the blank screen. No nothing. Atleast it should state that no bootable device found, but no, nothing at all. You can leave it there and it will be like that for days.
These laptops usually do not have the AMD/NVIDIA cancer of the video chip, intel based and work perfectly. I also service these computers every once in a while to clear the fan of any debris. So it's not running hot or nothing. This problem developed overnight i guess. Is there a way to reflash the bios other than holding the windows + b key with the hard drive in.
Or, what is the proper way to reflash the bios on a CQ50, using a USB stick. When i use mine it doesnt work at all. I think my directory structure is improper.
Please advise. Post thoughtfully after reading.