Having a strange issue with my PC so though I would consult the general genius of you lot 
At the weened I turned my PC off at night. When turing on the next morning the PC powered up but no power seemed to be reaching the keyboard/mouse and nothing was reaching the Monitor.
I took it apart bit by bit, turning it on with different parts connected to no avail. I moved my GFX card to a different PCI e slot that usually holds my sound card and it worked.
Moved everything back to normal and it worked fine. Thought it was just something was loose and needed re-seated so thought nothing more of it.
Came home from work today to find the pc seemed to be in sleep mode. Fans were spinning etc but nothing reaching the monitor. Reset the machine and encountered the same issue.
Did the same, re-seated some of the components, removed some peripherals and the issues seems to be sorted again. However all my BIOS settings have been cleared. This is now worrying me so thought I would check if anyone had encountered the same issue.
I thought mabey a component was causing it and was on the way out, possibly my GFX card?
I have also considered that it may be a power problem. I have a Dark Power Pro 750 watt but that should comfortably run the rig in my sig. However at any one time I can have the following on my PC
Asus 5850
Xonar DX2 Soundcard
vertex 2 SSD
a 1tb and a 500gb drive
Fan Controller
6 Fans
2 port usb 3.0 pci card
connected via USB:
Blackberry
iPhone
iPod Shuffle
Competition pro Joypad
Razer Mouse / Saitek keyboard
not sure how much power that much would draw.
Anyone have any ideas?
cheers

At the weened I turned my PC off at night. When turing on the next morning the PC powered up but no power seemed to be reaching the keyboard/mouse and nothing was reaching the Monitor.
I took it apart bit by bit, turning it on with different parts connected to no avail. I moved my GFX card to a different PCI e slot that usually holds my sound card and it worked.
Moved everything back to normal and it worked fine. Thought it was just something was loose and needed re-seated so thought nothing more of it.
Came home from work today to find the pc seemed to be in sleep mode. Fans were spinning etc but nothing reaching the monitor. Reset the machine and encountered the same issue.
Did the same, re-seated some of the components, removed some peripherals and the issues seems to be sorted again. However all my BIOS settings have been cleared. This is now worrying me so thought I would check if anyone had encountered the same issue.
I thought mabey a component was causing it and was on the way out, possibly my GFX card?
I have also considered that it may be a power problem. I have a Dark Power Pro 750 watt but that should comfortably run the rig in my sig. However at any one time I can have the following on my PC
Asus 5850
Xonar DX2 Soundcard
vertex 2 SSD
a 1tb and a 500gb drive
Fan Controller
6 Fans
2 port usb 3.0 pci card
connected via USB:
Blackberry
iPhone
iPod Shuffle
Competition pro Joypad
Razer Mouse / Saitek keyboard
not sure how much power that much would draw.
Anyone have any ideas?
cheers