Problem solved. Disconnected the fan that was in the case and hey presto system booted up. Only discovered this after spending money on a Corsair PSU and an HD5750! At least i got my money back on the piece of shit Acbel PSU even if it wasnt the problem.
Recently got a cheap mobo for my Phenom II X2 550. It was the Gigabyte GA-MA770T-UD3P. Despite being cheap it has excellent reviews online even for gaming compared to boards twice the cost. Only problem is you will have to get DDR 3 RAM which is a bit more expensive but if DDR 3 is going to be the future then why not make the switch now.
Also look at the Western Digital Raptor 10,000 RPM 320GB drive for one seriously fast HDD. Costs a bit more but you have to expect that.
As for graphics cards just look at benchmarks for what you can afford and go from there. The 295 is fast but with a silly price tag. ATI 5970 is faster still and again more expensive.
The mobo has a 24 pin power slot. I put the 20+4 into this. Then it has an 8 block slot. There is a 4+4 cable that fits in here although makes no difference.
The PSU is an AcBel iPower 660 which i just read a really bad review about. It is 610W so it should be more than enough to start. I only have cpu, ram and GFX connected at most.
Old PSU wouldn't hook up to new mobo. Well the 20 pin would but the 4 pin wouldn't fit anywhere. So i wanted to get a new PSU with 24 + 8 rather than 20+4 however i was working today so got my dad to get one. The shop sold him a 20+4 600W and said it would work. Now this one fits fine however when i hit the power button the LED on the PSU lights up then dies and the cpu fan spins for a split second before stopping.
Nothing ever works first time for me and its really starting to piss me off. Especially since the shop i got it from is closed until the 4th of Jan.
Currently running a 300W PSU however i have just got some new parts.
They are as follows
Phenom II X2 550 BE
MA770T-UD3P
2GB DDR3
ATI HD2600 Pro
Old system is
Athlon XP 2500
MSI K7N2 someting
1GB DDR2
9600XT
Audigy Soundcard
Probably going to use the onboard sound on the new Mobo. Will i need a 400W PSU or do you reckon the 300W will do. Also is there anything wrong with the cheap PSUs? I see brand named ones sell for over twice the price for no apparent reason.