difinity

Removing the CMOS battery won't work. It should give you a system disabled number if you try the supervisor password 3 times.

You've pressed and held the power button for 30 seconds with the battery and PSU removed ? No shorted pins in a USB socket ? Does anything happen if you press F2 or F12. Could be a corrupt BIOS.

Yes, I have to admit it's a bit of a stretch. If you were to try a Linux Live CD that would rule out a Windows driver issue.

I don't believe the T420 motherboards have a dedicated card. The nvidia chip is solderered to the board along with 4 memory chips. The non Nvidia board don't have them. Maybe it is an nvidia motherboard you have and it's failed ?

Does it make any difference enabling or disabling the Aero theme ? and what resolution is the screen ?

I think some of the T420s have dual graphics, using Nvidia and onboard and it switches between two. If it is, you could try disabling the Nvidia in the BIOS and see if it cures it. Might be a bga issue with the Nvidia chip. Any chance of a photo ?

Sounds like its similar to one of thesehttp://www.handykam.com/Bird-box-camera-and-nest-box-cameras/bird-box-cameras-and-nest-box-cameras.html The scart goes in the back of a TV, its so you can watch birds nesting.

Was it sagging in the slot ? I had a PC in for repair recently that had a big heavy gfx card, pulled down in the corner. I used a cable tie to hold it up and it's not been back since.

GiffGaff uses the o2 network so might not need unlocking. o2 phones didn't used to come locked anyway. Check out Virgin's SIM only deals if you are with them for broadband, you get a fiver off. 30 day rolling contract.

Just down the hill for me, count me in please.

Is there a component that has burnt up ? Something shorted ? Does the drive make any noise ? Check the two TVS diodes and ensure the contacts are clean off corrosion. What's the model number of the drive ? See if this helps. Donor Drives Blog - Head Swap Donor Matching Guide

Being SMT is no barrier to repair. I spend at least a couple of hours a day peering through my microscope repairing SMT stuff.

They use cheap nasty capacitors inside, that can cause the Amplifier ICs to fail amongst other things.

There are online Wordpress scanners, that will quickly show you any vulnerabilities.

I have this, which I believe is for my BBC I'm in Leicester. You're welcome to borrow it.

Sounds like they are trying to fob you off. Adapter voltages are fairly standard and if the need soldering to the amp then the connector at the end isn't an issue. Do the adapters have any indication of Volts and Amps marked on them ?

With an external BIOS programmer after removing the BIOS chip.

Very true, thanks, I missed load in my pile whilst half asleep last night. Must have missed it in my PAT testing training too.

Laptop plugs have proper earth pins with metal that give strength as well as provide an earth. This adapter looks like it had a fake plastic one ? The tall design looks like it would put strain on the pin if not pulled straight. Not the kids unplugging to charge their phones ?

Be wary of buying cheap DIY superstore downlighters. The cheap ones don't have the length to accommodate the LED bulbs. I have 31 of these https://www.downlights.co.uk/icage-fire-rated-downlights.html First fix for 30 to be wired up cost £200 and this included 6 kitchen sockets, cooker and light switches and was on boxing day whilst we built around him. I wanted a modern look so my skirting and architrave is 12mm MDF that cost £15 for the whole of downstairs and that included being cut to size. My plasterer/builder friend was £100 a day....they were long days too.

I've got about 70 of those screws here, I can drop 10 in the post to you if you like.

2 flashes is BIOS. HP Support document - HP Support Center You could also try replacing the CMOS battery.

I know a couple if people that have switched recently, one of them mentioned price as a deciding factor. No complaints from either of them.

Like this ? http://www.aliexpress.com/item/HD-PW4101-hard-drive-selector-sata-switch-HDD-Power-Switch-Hard-disk-Control-For-Desktop-PC/32416327676.html?spm=2114.40010308.4.2.wekYz3

I'm guessing its a BGA issue rather than dead chips, exaggerated by poor cooling. There are a mix of Nvidia and AMD chips in the affected models. Hardly surprising Apple are being quiet about it, they don't like to admit when their hardware isn't as awesome as their marketing is.