06-26-2016 05:07 AM
07-08-2016 11:28 AM
I also cannot boot & just get a blank screen with num & caps lock flashing 5 times. I keep powering on & off. Eventually the system boots. 5 blinks indicate a general system failure. However, when the system finally booted, I went into BIOS diagnostics. I did a complete system check and this showed NO failure. Can't understand what is going on. Any ideas out there please?
07-10-2016 05:20 AM
The same thing happened to me on an HP ProBook. This is what I did.
First go into BIOS F2 & do system checks - Run Time, Hdd, Memory etc. This was all clear for me & so no problems there.
1) Computer off - take out battery - unplug A/C.
2) Press power button on & leave finger on button for 30 secs.
3) Replace battery & A/C.
4) Power on & screen should boot.
If it doesn't.
Repeat steps 1 - 4 as above but leave finger on power button for 1 minute.
Repeat again but leave finger on power button for 2 mins.
This is the 30sec- 1min - 2min procedure and usualy works for 50% of cases.
Hope this helps as it did for me & my machine is about 5yrs old now!