no idea what is wrong with my computer

[jtjt00]

i did not do that

You should do so, failing to do so will cause setup to look for MBR in other drives than the OS drive. Once there is, will modify the MBR and continue setup. As a result, that other drive can't be removed or boot will fail to find the MBR!

 

[sayplease]

You should do so, failing to do so will cause setup to look for MBR in other drives than the OS drive. Once there is, will modify the MBR and continue setup. As a result, that other drive can't be removed or boot will fail to find the MBR!

i think the bootmgr is missing problem is gone.
The only thing is that the random computer freeze is still occuring even though my hdd in unplugged.
Probably, mobo having problems like mib500 said, or psu im guessing.

18/9 update: did not encounter any problems since

If i see bootmgr missing again i will reformat the ssd again without other storage drive in use.

 

[moodless]

Or it could just be your sata cable. Believe when u set up ur PC should have spare. Try changing it first..

 

[sayplease]

computer still having issues every now and then.

It may be fine (no freezes or crash) for 2 days straight then suddenly freeze 2, 3 times in a row (after i reboot the first freeze, it will freeze again after 5~10mins).

Today the issue was slightly different. The first error is the computer crashing, computer powers off completely. When i reboot, 5mins later it crash again. This time it is a BSOD crash.

This time, it wouldn't boot up even if i unplug the power supply and hold the power button. For once, it boot up into the windows is starting screen (grabbed this pic off google) then it just froze there.

Apart from that, the other reboots that i tried just had a blank/black/nothing screen on the monitor.

I figured the most common possibilities are,
1) overheating (I am quite sure my temps are fine)
2) PSU
3) mobo

So, i am quite sure that my temps are fine, but i can't be sure since i can't boot up the computer to check. I cleaned up my CPU of dusts, fans, ram, gpu and tried to turn on my pc again. (Reset cmos battery too).

At first, it failed to boot up. I unplug the power and hold the power button. Eventually it boots up into windows without any problems. I dl hardwaremonitor and look at my temps. They are all fine. 45deg for CPU, 35deg for GPU, 30deg for SSD.

So yea now im leaning towards 80% PSU being faulty to not able to provide enough power to my system? I noticed when the errors occurs, I am running twitch tv, youtube or media player and gaming at the same time.
20% towards mobo being faulty like some hwzer said in this thread.

Saw this while googling for solutions

Symptoms of a Failing Power Supply
The computer is on for a while, but maybe while playing a game or other application, the computer will just randomly turn off without warning or possibly display a blue screen of death.

Which is what happened to me today.


PS: i only have SSD in my system. Already removed my HDD last week.

[update] edit: The problems are fixed after cleaning my whole CPU of dust. No more freeze, shutdown. There were nothing wrong with my HDD, PSU or motherboard.