New assembled PC not booting

kpothal

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Dec 5, 2011
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18,510
Sir,
Previously I had a system with a dual core cpu, 945gz-dms-6h motherboard, (1gb+512mb) ddr2 ram 533mhz, 2tb seagate sata2 hdd, 15" crt samsung monitor and a frontech 450watt normal smps. This was running OK.

I wanted to upgrade my PC. So I sold the components and kept the monitor, SMPS with cabinet and the 2tb hdd for using in the new system. I purchased all required components from online & got all with sealed package with bill. I fitted all as per instruction manual carefully, but it do not boot, no beep sound, no cpu fan running. What to do, Please Help me.
The components I have purchased are as follows...
1) Intel core I5 4690 cpu
2) Gigabyte GA-H81M-S2PH motherboard
3) Corsair 4gb DDR3 1600mhz ram (CMV4GX3M1A1600C11) *2 nos
4) Samsung 840 evo 120gb ssd
5) APC 600VA UPS (BX600CI-IN)

I only did one modification. In my old smps there was 4-pin 12volt power supply. I add (soldered on the smps card) another 4-pin set in parallel which is extracted from another damaged same type smps. Finally I got 8-pin 12volt power to feed 8-pin ATX 12V power connector on the MB.

First I fit motherboard in the cabinet, then CPU on MB, then one 4gb ram in 1st slot. Then cpu fan cable, 8-pin ATX 12V power cable,24-pin ATX main power cable are fitted on MB. Then sata power cables to my hdd and ssd. Sata2 data cable with hdd & MB, sata3 data cable with ssd & MB. Then other front panel cables fitted to MB. Then I connect the smps with apc ups and then the ups with home power supply.

Then what goes wrong? Is there any components I fitted are incompatible with others? I can't understand. Please help me. Thanks.
 
Solution
Have a look at the no post checklist in my signature.

If you have done all that I am 90% sure the problem is with the PSU that you reused. The soldering is almost never going to work and it is probably incapable of powering the haswell CPUs.
If you don't manage to make it boot from the checklist.... I would strongly advise getting a new, good quality PSU. Get at least a tier 2 class B unit from the hierarchy (link also in sign.). A 350W would be good enough for you if you don't intend on adding a GPU.
Have a look at the no post checklist in my signature.

If you have done all that I am 90% sure the problem is with the PSU that you reused. The soldering is almost never going to work and it is probably incapable of powering the haswell CPUs.
If you don't manage to make it boot from the checklist.... I would strongly advise getting a new, good quality PSU. Get at least a tier 2 class B unit from the hierarchy (link also in sign.). A 350W would be good enough for you if you don't intend on adding a GPU.
 
Solution


Thank you very much for your very good answer.