HP Support Forum

[#1]

When i turn my compaq 6735s laptop on the fan starts, the caps lock light flashes, the cd drive light flashes and the cd drive makes a noise but the screen does not start. If i remove the mains adapter plug the same thing happens, and the same thing happens if i remove the battery but leave in the mains adapter plug. The exact same thing happened the other day but then it just turned itself on in the middle of the night and was then fine. A few weeks ago it wasn't turning on at all so i bought a replacement mains adapter from ebay which has worked until now. I tried a hard reset which did not work. the mains adapter socket on the laptop does not turn orange when the adapter is plugged in. Any help would be greatly, massively appreciated, should i just buy another mains adapter? Thank you..

[#2]

Sometimes the mains adapter socket (DC socket) are damaged, this is common on HP laptops.

You can take a flashlight and look in the socket, see if you can spot any damage to the center pin.

[#3]

same thing happened to me

nothing wrong with the power socket battery is fully charged and got a new power cable a few weeks ago

[#4]

Caught this suggestion on the Internet the other day, don't remember where, it was for W7, may work for other OS's as well.

Disconnect AC

Shutdown

Remove battery

Connect AC

Startup

Open Device Manager

Under the Batteries category, right-click all of the Microsoft ACPI Compliant Control Method Battery listings, and select Uninstall (it’s ok if you only have 1).

Shutdown

Disconnect AC

Insert battery

Connect AC

Startup

see if will start charging.

[#5]

the battery is fine on mine and the power lead is fine it's the actual computer thats narked

won't start up atall and have already removed battery removed power restarted, removed disc drive, restarted, removed ram reinserted and restarted and still nothing

[#6]

anymore ideas?

[#7]

bump need fix as can't afford new laptop

[#8]

LED LocationComponent TestedError Condition

Battery power LED off, and Caps Lock/Num Lock off	Battery or AC Adapter	AC adapter not connected or failure Battery low charge or failure
Battery power LED blinking	Battery	Insufficient charge on the battery
Blink: 1 - Caps Lock/Num Lock	CPU	CPU not functional
Blink: 2 - Caps Lock/Num Lock	BIOS	BIOS corruption failure
Blink: 3 - Caps Lock/Num Lock	Memory	Module error not functional
Blink: 4 - Caps Lock/Num Lock	Graphics	Graphics controller not functional
Blink: 5 - Caps Lock/Num Lock	System board	General system board failure
Blink: 6 - Caps Lock/Num Lock	BIOS	BIOS authentication failure

[#9]

it blinks once i think so in otherwords my cpu is fried and its buggerd...

terrific after less than 2 years of use

[#10]

figured out whats wrong with it. It overheated and melted foam onto one of the contacts on the mobo just below the processor socket to the left of the copper screw hole. **bleep** thing.