A sudden shutdown after a restart

Heyy there.

well, I've been looking everywhere over the internet to check if someone got the same..

couple of months ago, i decided open up my computer and clean the parts, after i was done with it, and put the parts back, everything worked fine, after days, my pc froze up suddenly, so i had to reboot it manually which is by pressing the reboot button which is in my computer. therefore, it turned on normally, when my computer went into automatic repair mode, it shuts down, i tried many several times and it keeps on shutting down, i had to leave it for a while, after hours i decided to turn it back on and it worked normally, i thought the problem might be form the power supply, it was so old and t was doing some noises..
so today i went to a computer shop and took my PC with and told him to change my power supply. the one i had was 450W so i told him to replace it with a 550W i thought it might be a good one, before half an hour i came back home, i was like i should format my computer, but also, when i tried going to the boot up screen and choose the bootable USB drive, it turned off once again, i wanna know whats the problem.. & i hope i could find it here :/

I'll leave you guys with my computer information

Operating System: Windows 8 Pro 32-bit (6.2, Build 9200) (9200.win8_gdr.130503-1646)
Language: English (Regional Setting: English)
System Manufacturer: OEM
System Model: OEM
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 Duo CPU E7400 @ 2.80GHz (2 CPUs), ~2.8GHz
Memory: 4096MB RAM
Available OS Memory: 3326MB RAM
Page File: 1719MB used, 2182MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.02.9200.16384 32bit Unicode

Display Devices
Card name: ATI Radeon HD 5450
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0x68F9)
DAC type: Internal DAC(400MHz)
Device Type: Full Device
Device Key: Enum\PCI\VEN_1002&DEV_68F9&SUBSYS_E199174B&REV_00
Display Memory: 3444 MB
Dedicated Memory: 2037 MB
Shared Memory: 1407 MB
Current Mode: 1280 x 1024 (32 bit) (75Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: SAMSUNG

i hope thats some enough information
2 answers Last reply
More about sudden shutdown restart
  1. If you cleaned it try re-seating the RAM and video card. If you have a PCI-E power cord to your video card make sure that is plugged in tight too.
  2. maddogfargo said:
    If you cleaned it try re-seating the RAM and video card. If you have a PCI-E power cord to your video card make sure that is plugged in tight too.

    sorry for my late reply, i was actually trying to do what you have told me but unfortunately, my graphic card doesn't have the PCI-E power code, but I've took off the ram and changed their places, i don't think it worked out bro :/

    here's more about my graphic card
Ask a new question

Read More

Power Supplies Intel Bootable Usb Computers Systems Shutdown Windows 8