One Beep followed by Two Beeps - Solid blue light

[jmilli2]

Hi,

I just upgraded this PC to Windows 10 and had finished and everything was working fine. I opened it up to replace the CMOS battery and now it won't start. I've tried a couple of batteries and the original. I've checked everything is plugged in and I haven't knocked anything out by accident.

At first I was getting a solid blue light then it would beep once wait five seconds then beep once again. I unplugged and re-seated the battery and the memory and the graphics card etc and not I get one beep five seconds then two beeps - again with a solid blue light.

I can't find this combination in the help documents can anybody help or advise?

[Lil_Boy_Blue · Accepted solution]

Hi
Depending on the age of the PC and the BIOS vendor...
The 4th, 5th and 6th characters of the Serial Number give the age when it went thru the factory...
EGG345FLAN That is 2013 45 th week.
https://support.hp.com/us-en/document/bph07107

I would consider that the CMOS removal changed the BIOS settings and HDD / RAM / Boot options are all awry.

So you may need to select the GPT or MBR type of disk or ............ 

[jmilli2]

Thanks for the help... after 10 tries of seating everything and leaving it to reboot itself a few times it seems to be firing up again now without issue. Still not sure what the problem was though.

[Lil_Boy_Blue]

Prego.