boot problem and pc freezes

[xarok]

hey LTT members
I bought a new Asrock B85M HDS 3 days ago,and it works fine, but when I unplug the power cable from the pc and replug it, the pc boots several time like the first boot after building a pc, I think it's a mobo problem. So what do you think of that ? is it a mobo problem ? and is it a critical problem ? and how can I solve it ?

and my secend problem is that my pc freezes randomly, about 1 time a day  the temps and memorie usage andspeed are normal , and now I'm running a memetest, what do you think of this problem ?

PS I've never overclocket anything, and every thing are set in normal setting

[dragoon20005]

how many sticks of RAM are installed?

 

run with one stick

 

ensure the power plugs to the mobo are secure

 

a lose power plug will cause the repeat power cycles

[xarok]

how many sticks of RAM are installed?

 

run with one stick

 

ensure the power plugs to the mobo are secure

 

a lose power plug will cause the repeat power cycles

I'm using one stick of Hyperx fury 8gb?

Do you mean 24 pins cable or 8 pins cable ?

btw how much circles or time should I run the memetest for ?

[dragoon20005]

I'm using one stick of Hyperx fury 8gb?

Do you mean 24 pins cable or 8 pins cable ?

btw how much circles or time should I run the memetest for ?

yea either the 24 pin and 8 pins

 

run for a few hours of the memtest say around 4-6 hours

 

 

btw what PSU you got in your system?

[xarok]

yea either the 24 pin and 8 pins

 

run for a few hours of the memtest say around 4-6 hours

 

 

btw what PSU you got in your system?

 

 

I'm using corsair cx500

[dragoon20005]

I'm using corsair cx500

do the memtest and see what you get

[xarok]

do the memtest and see what you get

I have run it for 2 hours with no error, and I may let it running for more 4 hours to see what I'll get

[dragoon20005]

I have run it for 2 hours with no error, and I may let it running for more 4 hours to see what I'll get

yea will wait for your result 

[xarok]

Update :

I ran memtest for about 5 hours without any error, I need Heeeelp  :wacko:

[dragoon20005]

Clear CMOS and check the power cables again

 

do you have another PSU to test?

 

try the paper clip test for the PSU

 

if the PSU is ok

 

i may point to mobo problems

[xarok]

Clear CMOS and check the power cables again

 

do you have another PSU to test?

 

try the paper clip test for the PSU

 

if the PSU is ok

 

i may point to mobo problems

 

I think the psu is ok

 

I'll try a Tacens Mars 700 ( it works just fine for more than 2 years in an other pc )

 

and  I'll clear CMOS

BTW the pc freezes randomly sometimes it happen after 4 or even 6 hours after booting the pc, so testing the pc after these changes may take the hole day

[xarok]

Update

I've cleared CMOS
Run memtest for more  5 hours without problem
Change PSU
Changed Ram slot

And I still have the problem

Please Heeeelpp !!!!

[dragoon20005]

looks like mobo trouble

 

you might need to replace it