Optimus V 15" Laptop, Struggling to turn on

[kizcat]

My Spec:

Chassis & Display
Optimus Series: 15.6" Matte Full HD LED Widescreen (1920x1080)
Processor (CPU)
Intel® Core™i7 Quad Core Mobile Processor i7-4700MQ (2.40GHz) 6MB
Memory (RAM)
8GB Samsung SODIMM DDR3 1600MHz (1 x 8GB)
Graphics Card
NVIDIA® GeForce® GTX 765M - 2.0GB DDR5 Video RAM - DirectX® 11
Memory - Hard Disk
750GB WD SCORPIO BLACK WD7500BPKX, SATA 6 Gb/s, 16MB CACHE (7200 rpm)
2nd Hard Disk
1TB SERIAL ATA II 2.5" HARD DRIVE WITH 8MB CACHE (5,400rpm)
DVD/BLU-RAY Drive
8x SATA DVD±R/RW/Dual Layer (+ 24x CD-RW)
Memory Card Reader
Internal 9 in 1 Card Reader (MMC/RSMMC/SD: Mini, XC & HC/MS: Pro & Duo)
Thermal Paste
ARCTIC MX-4 EXTREME THERMAL CONDUCTIVITY COMPOUND (£9)
Sound Card
Intel 2 Channel High Definition Audio + MIC/Headphone Jack
Bluetooth & Wireless
WIRELESS INTEL® N135 802.11N (150Mbps) + BLUETOOTH
USB Options
3 x USB 3.0 PORTS + 1 x USB 2.0 PORT AS STANDARD
Battery
Optimus Series 8 Cell Lithium Ion Battery (5,200 mAh/76.96WH)
Power Lead & Adaptor
1 x UK Power Lead & 120W AC Adaptor
Operating System
Genuine Windows 7 Home Premium 64 Bit w/SP1 - inc DVD & Licence (£79)

For a few months now my laptop has been struggling to turn on/ come out of sleep mode.
Generally it will power up, lights come on, and within about a second it is followed by a high pitched 'bip' and loses all power before even reaching the splash-screen, then after a few seconds it will automatically power up and try again.
Typically it fails to start at least once every time it's turned off/shut down/asleep, but this can happen stuck on a loop multiple times. Which means when it does boot it has to boot from scratch.

The only changes made to the above spec was an upgrade in RAM (to 16GB Corsair 2x8GB) a couple of years ago, and I have had no issues with that, and around a year ago the battery died all-together and holds no charge at all. But it does this regardless of RAM configuration and with+without the battery being in place.

Anyone have ideas what the problem is or how I can fix it? (if at all)

Bip noise is very quiet (might need to turn volume up, beware of background static noise) , but about 2-3 second in
[video=youtube_share;3RiCHW90FVA]https://youtu.be/3RiCHW90FVA[/video]

 

[ubuysa]

If I read you right these failures only happen when you resume from sleep? Does it boot normally every time from a cold boot (after a full shutdown)?

What happens if you boot the Windows installation DVD - or any bootable media such as a Linux distro? I'm trying here to establish whether this is a Windows or hard disk issue or whether it's more fundamental.

 

[kizcat]

It does this from cold boot as well (which is what happened in the video). I did consider hard drive failure, but it isn't even getting to the splash-screen when it happens. Once it does manage to turn on and get past the splash screen it has no trouble booting into windows. I haven't tried other bootable media because this happens before I get to the point where I can select anything.

 

[ubuysa]

It does this from cold boot as well (which is what happened in the video). I did consider hard drive failure, but it isn't even getting to the splash-screen when it happens. Once it does manage to turn on and get past the splash screen it has no trouble booting into windows. I haven't tried other bootable media because this happens before I get to the point where I can select anything.

Then your only real course of action now is to call PCS I'm afraid.