Compaq / Hp Laptop LED Blinking Code

Use the following table to learn about the meaning of a code that your computer may encounter.

Code type	Number of Blinks or Beeps	Component Being Checked	Condition	Possible solution(s)
AC power adapter LED	Constantly on	Power adapter	OK. Power is being supplied.	None. The power adapter is likely not the problem.
AC power adapter LED	Constantly off	Power adapter	Power is not being supplied	Try a different power outlet. Replace power adapter.
AC power adapter LED	Continuous blinking	Power adapter	Insufficient power	Try a different power outlet. Replace power adapter.
Caps Lock/Num Lock	1	CPU	CPU not functional	Reseat replace CPU. Service
Caps Lock/Num Lock	2	BIOS	BIOS corruption failure	Restore BIOS from onboard backup (jumpers) Service
Caps Lock/Num Lock	3	Memory	Memory module error not functional	Reseat memory modules (see next section). Test memory from UEFI or BIOS. Replace bad memory modules. Service
Caps Lock/Num Lock	4	Graphics	Graphics controller not functional	Service
Caps Lock/Num Lock	5	System board	General system board failure	Service
Caps Lock/Num Lock	6	BIOS	BIOS authentication failure	Restore BIOS from onboard backup (jumpers) Service
Beep	Varies	Varies	Varies	Reseat memory modules (see next section). Service For more detail on the exact code, search the Internet for "beep code" and the manufacturer of your BIOS - such as AMI or Award.