tompang to ask....
my nephew's computer start to haywire for a few times already. the symptom is nothing on display. Specs as follow
- Asus 785M (cant exactly remember which model) with AMD x4-640 (stock clock)
- 2x2GB 1333 total 4 GB
- ATI 6850 1GB
- 500 GB WD Blue
- Cooler master 460W real power psu
Steps i tried:
- unplug everything, plug in one stick ram and try to use onboard graphic card. no display. with cpu and gpu fan running.
- clear cmos by jumper, also by unplug battery, no use.
- test the ram and graphic card on another pc no issue. so i suspect either motherboard and processor.
- when im about to give up and put everything together, it miraculously can boot up

but this happen a few times already, when it cannot boot, i need to try this and that to make it work.
so im thinking to replace it with either one of these options. budget and stability is the most important, as i cannot go and troubleshoot for my nephew everytime
A. GIGABYTE GA-B85M-D3H + i5 4460 $348
B. ASROCK B85 KILLER + i5 4460 $329
C. ASROCK H81M-DGS + i5 4460 $292
D. GIGABYTE GA-B85M-D3H + i3 4130 $257
E. ASROCK B85 KILLER + i3 4130 $253
F. ASROCK H81M-DGS + i3 4130 $201
reason B85 is so that can reuse existing ram and add additional 2x4GB or 1x8GB.
my questions are:
1. Is it really necessary for i5 4460 compared to i3 4130? usage is purely gaming those first person shooter.
2. will the 6850 bottle neck with i3?
3. personally i prefer Gigabyte due to good experience with it. i know its heng suay things. but is Asrock low end ok to begin with? or i should get Gigabyte since price difference is around $50?