Display not show or black screen
I had the same problem. While rebooting the laptop the screen would be on for a few seconds after it finished rebooting then the display would go black. If you looked very carefully at the screen you could see the image was there but there was no light behind the screen to make the image visible.
I removed the black plastic display bezel cover that goes around the edge of the display screen to check out the lights and wiring. I found a small magnet that belongs inside the display bezel had fallen out of it's slot in the plastic bezel and was stuck to the inverter pcb (printed cicuit board). To fix this problem I secured the magnet into it's slot inside the display bezel with a bit of glue. After fixing the problem and putting the display bezel back together the laptop worked normally.
This magnet is how the laptop knows the lid is closed. When the laptop is closed the magnet is moved closer to a magnetic switch on the inverter pcb and activates the switch. The laptop thinks it is closed and shuts off the lights behind the display screen. When the magnet fell out of it's slot and stuck to the inverter it activated the magnetic switch all the time whether the laptop was open or closed. This caused the laptop to think it was closed and shut off the lights behind the dispaly screen as soon as the reboot finished.
Compaq presario cq61 display not show - 0bff3520-95d0-4d35-9d8a-c5e3e0d627fd.jpg0-95d0-4d35-9d8a-c5e3e0d627fd.jpg" alt="0bff3520-95d0-4d35-9d8a-c5e3e0d627fd.jpg" class="h_mi" />
Those models a famous for a bad video card, in order to get the laptop fixed the video card needs to be reballed (a $120 job including labor).
no fix no pay, let me know : fosg2000 AT gmail DOT com
SOURCE: driver for cq61-300sv
here is the link for drvers for this notebook.
http://h10025.www1.hp.com/ewfrf/wc/product?product=4093994&lc=en&cc=us&dlc=en&lang=en&cc=us
click on software and driver downloads
SOURCE: COMPAQ PRESARIO CQ61 MOUSE FREEZED HOW DO I SOLVE
hey! i think u need to troubleshoot ur hardware device manager for mouse and have to clean up ur registry with reginout cleaner
SOURCE: how do i remove the outer bezel on a compaq
1. Take the side door off as usual.
2. Locate the drive door lock inside the chassis.
3. Rotate the lock to the down position to unlock the upper front panel door.
4. Press the indentation located on the lower front panel to open the lower door.
5. Grasp under the bottom of the upper front panel door, lift up, and gently remove from the hooks. (Tip: The upper front panel door has finger holes.)
6. Remove any of the bay components by pressing both sides of the drive rails. There are no screws.
hope this helps...........
SOURCE: I have a Compaq presario
Try attaching an external monitor to the laptop & see if you could get any display on it. If this is successful, then you might have either a faulty LCD cable or screen inverter board.
The
LCD cable transfers data signal from the motherboard & video card
to the LCD screen. It also supplies high voltage DC power to the screen
inverter board. The screen inverter board works as a power supply for
the backlight lamp mounted inside the LCD screen. It converts low
voltage DC power to high voltage AC power needed for the backlight lamp.
SOURCE: problems with booting a Compaq
Reinstall Windows, the one you have now is corrupted: get your recovery disk, put it in press Esc and select the CD as boot device. Now follow the instructions on the screen
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