Before you do any servicing or taking your CQ40 apart, do visit the HP page on details about CQ40 blinking code -- link at bottom of this page. Here is the list of the blinking code (taken from HP.com). I suggest you do hard reset and re-seat RAM module. On two occasions, on two units of this model, I just re-seat RAM module, and it works fine. So, sometime, 4x blinking not actually cause by graphic controller problem.
Blinking Code Translation Table
| Number of Blinks or Beeps | Location of Blinking LEDs | Component Being Checked | Error Condition |
|---|---|---|---|
| Continuous glow | Battery power LED | Battery | The AC adapter is attached and the battery is charging, but does not yet have sufficient charge to power the notebook. |
| 1 | Caps Lock/Num Lock | CPU | CPU not functional |
| 2 | Caps Lock/Num Lock | BIOS | BIOS corruption failure |
| 3 | Caps Lock/Num Lock | Memory | Module error not functional |
| 4 | Caps Lock/Num Lock | Graphics | Graphics controller not functional |
| 5 | Caps Lock/Num Lock | System board | General system board failure |
| 6 | Caps Lock/Num Lock | BIOS | BIOS authentication failure |
| Continuous blink | AC power adapter LED | Power adapter | Insufficient power |
For more details, please visit this page.
how can this porblem be solved???
ReplyDelete(4time---Caps Lock/Num Lock-----Graphics--------------Graphics controller not functional)
Remove the battery and the AC adapter, then press the power buttonfor a minute
Deleteit works, thanks for uploader.. :D
ReplyDeletethank you very much, this helped me a lot and saved my money, they're charging me $30 to fix it, brought it home, read this article, do it my self and fixed it. 3 blinks Caps Lock/Num Lock Memory Module error not functional
ReplyDeleteHi Jessie I am having same problem plz tell me how can i resolve it
Deletebrother change power adapter but condition same my cq40 continuos caps lock blinking battery power or ac power same laptop fan few second on and off caplock led blink any solution
ReplyDeletecq40 continuos caps lock blinking battery power or without battery power (adapter) switch on my laptop few second fan on and caps lock led blinking continuos any solution pls mail shahilkhn760@gmail.com
ReplyDeletehave a cq56-115dx, about 3 years old, can 1 blink cpu be easily/cheaply fixed?
ReplyDeleteCQ40 caps and num led blinks continously.. What is the main problem with that? How can i solve it
ReplyDeleteI have a cq40 with constant blinking caps and num lock. If I leave it blinking with blank screen in less than a minute screen turns on and system begins to boot. Everything seems to work as usual but with constant blinking caps and num lock. Confused.
ReplyDeleteBTW, I think constant blinking means 1 blink so the CPU is not functional... but it works!?
DeleteIm Gettin same issue, CPU works but motherboard blinks like cpu error led
DeleteThank you so much for sharing Compaq Laptop Support update that is very informative.
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my laptop compaq cq40-423 model was purchased 10 yrs ago. now there is problem coming in my laptop that is whenever i turn my laptop on then the system starts running as its normal way but no display comes totally black screen. After this, i noticed my keyboard caps lock button and numlock button start blinking 3 times. my laptop has been given for repairing many times but this problem won't solve. please please help me to fix this problem permanently. my work is at risk.
ReplyDeleteMy laptop capslock and numlock was blinkung for four times so I remove battery and adapter but it didn' twork but the blinking changed. capslock and numlock was glowing for 3 seconds and was out for 3 swconds and it keeps repeating, does that mean it has insufficient power.
ReplyDelete