Switched my CPU, not starting up

[Marco333]

I recently bought an AMD Phenom II x4 Processor, Black Edition for my windows 7 computer to replace my AMD Athlon(tm) X2 240 Processor. I installed it using this guide

How To Install AMD Phenom II X4 955 Black Edition CPU in BIOSTAR A880G+ 880G Micro ATX Motherboard - YouTube

but when I reboot my computer the startup process didn't start. The fan turned on and everything else was fine, but the monitor didn't detect any input and I didn't hear any of the normal sounds I'm used to when my computer boots up. I replaced the Phenom / fan with the old Althon set, and the same thing happened (I'm typing this from a friend's computer). What went wrong / what should I do to fix?

Computer specs here:
OS: Windows 7 Ultimate 64bit (6.1, build 7600)
System Manufacturer: FOXCONN
System Model: M61PMV
BIOS: Phoenix - Award WorkstationBIOS v6.00PG
Processor: AMD Athlon(tm) X2 240 Processor (2 CPUs), ~2.8GHz
Memory: 4096MB Ram
Page File: 2371MB used, 11721 Available
DirectX Version: DirectX 11

If you need more info, tell me (and tell me how to get it).

[makinu1der2]

What model Phenom II processor did you install? Is it supported by the motherboard?

If it is listed on the CPU support list then you may need to update the BIOS.

Foxconn Support - CPU Support List

[Marco333]

Its a PhenomII X4 960T processor, if thats the model number. If not, I have the box / CPU with me, just tell me where to look.

[makinu1der2]

That CPU is not supported by your motherboard.

[Marco333]

Meaning I should what? Return it? Install something? I'm new at this.
And why wont the other CPU work now?

[makinu1der2]

I would suggest checking the old CPU for any damaged pins.

Try clearing the CMOS settings.

You will need to get a compatible CPU for your motherboard. Foxconn Support - CPU Support List

[Marco333]

None of the pins are visibly damaged, and what is / how does one clear the CMOS settings?
And if you have some spare time, could you suggest a similar CPU model from the list so I don't mess up again? Thanks for replying so quickly btw.

[makinu1der2]

Perform the following steps:
-Power off the PC and remove the power
-Make sure that the old CPU is seated properly in the slot.
-Remove the battery from the motherboard for a few minutes then re-insert.
-Check all power connections to the motherboard.
-Power on the PC

[Marco333]

Originally Posted by makinu1der2

-Remove the battery from the battery from the motherboard for a few minutes then re-insert.

?

Wasn't sure what you meant. There was a lithium battery, but I didn't touch it. Followed this guide instead, but nothing changed:

How To Reset Your CMOS - YouTube

Also noticing unusual hissing noises from the CPU after shutting it down.

[Rich-M]

Originally Posted by makinu1der2

That CPU is not supported by your motherboard.

I must be missing something here as I don't see a motherboard model anywhere to check cpu support for.

[makinu1der2]

Either method would work to clear the CMOS.

Can you tell where the hissing noise is coming from?

[makinu1der2]

Rich it in his first post

System Manufacturer: FOXCONN
System Model: M61PMV

[Marco333]

Just gonna answer honestly:
I've been starting up / shutting down my tower sideways with the plating off, and whenever it shuts off sideways, a small drawn-out hiss comes from what appears to be the CPU every time. When I tried it upright, there was a little more noise than normal (normal being pre-cpu switch), but not nearly as much as when it was sideways.

[Rich-M]

Originally Posted by makinu1der2

Rich it in his first post

Thanks, I saw that but didn't realize it was the motherboard model #.

[makinu1der2]

If everything looks to be in order with the old CPU it is possible the motherboard/slot is damaged.

I would suggest you try removing the components from the case and benchtest the components. How to Bench Test / Troubleshoot Your System

[Marco333]

After taking out / reinserting everything as described in that thread, it started up fine and everything was normal again, except for a screen in the very beginning of the startup process that said I was in safe mode until I reset my CMOS setting. After a reboot (without trying to reset CMOS), the screen didn't show up again and everything seemed back to normal. At this point I'd say its completely usable again, but should I do any checks before getting back on?

[makinu1der2]

When inserting /removing the CPU there could have been a case short occur that caused the no boot issue.

[Marco333]

I assume that means I'm good to go.
Thanks so much, you were very helpful.

[makinu1der2]

If everything is booting then you should be good.