My computer keeps rebooting.

My computer keeps rebooting, sometime it may run 5 minutes sometime hours. Usually we have our browser ( Firefox) open and it will crash or system will just reboot. I've tried reinstalling Firefox and even reinstalled McAfee because it was acting funny too. Below I have added the event log in hopes you can help.
Event Type: Error
Event Source: Application Error
Event Category: None
Event ID: 1001
Date: 10/21/2008
Time: 8:08:25 PM
User: N/A
Computer: GARY
Description:
Fault bucket 946215510.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 42 75 63 6b 65 74 3a 20 Bucket:
0008: 39 34 36 32 31 35 35 31 94621551
0010: 30 0d 0a 0..

Event Type: Error
Event Source: Application Error
Event Category: None
Event ID: 1000
Date: 10/21/2008
Time: 8:08:20 PM
User: N/A
Computer: GARY
Description:
Faulting application firefox.exe, version 1.9.0.3188, faulting module npswf32.dll, version 9.0.124.0, fault address 0x0000d9af.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74 Applicat
0008: 69 6f 6e 20 46 61 69 6c ion Fail
0010: 75 72 65 20 20 66 69 72 ure fir
0018: 65 66 6f 78 2e 65 78 65 efox.exe
0020: 20 31 2e 39 2e 30 2e 33 1.9.0.3
0028: 31 38 38 20 69 6e 20 6e 188 in n
0030: 70 73 77 66 33 32 2e 64 pswf32.d
0038: 6c 6c 20 39 2e 30 2e 31 ll 9.0.1
0040: 32 34 2e 30 20 61 74 20 24.0 at
0048: 6f 66 66 73 65 74 20 30 offset 0
0050: 30 30 30 64 39 61 66 0d 000d9af.
0058: 0a .

Event Type: Error
Event Source: Application Error
Event Category: None
Event ID: 1000
Date: 10/21/2008
Time: 5:40:36 PM
User: N/A
Computer: GARY
Description:
Faulting application wmplayer.exe, version 11.0.5721.5145, faulting module wmp.dll, version 11.0.5721.5230, fault address 0x0019654f.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74 Applicat
0008: 69 6f 6e 20 46 61 69 6c ion Fail
0010: 75 72 65 20 20 77 6d 70 ure wmp
0018: 6c 61 79 65 72 2e 65 78 layer.ex
0020: 65 20 31 31 2e 30 2e 35 e 11.0.5
0028: 37 32 31 2e 35 31 34 35 721.5145
0030: 20 69 6e 20 77 6d 70 2e in wmp.
0038: 64 6c 6c 20 31 31 2e 30 dll 11.0
0040: 2e 35 37 32 31 2e 35 32 .5721.52
0048: 33 30 20 61 74 20 6f 66 30 at of
0050: 66 73 65 74 20 30 30 31 fset 001
0058: 39 36 35 34 66 0d 0a 9654f..

Event Type: Error
Event Source: McLogEvent
Event Category: None
Event ID: 5022
Date: 10/21/2008
Time: 1:50:16 PM
User: NT AUTHORITY\SYSTEM
Computer: GARY
Description:
MCSCAN32 Engine Initialisation failed. Engine returned error : 8

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7026
Date: 10/21/2008
Time: 8:13:10 PM
User: N/A
Computer: GARY
Description:
The following boot-start or system-start driver(s) failed to load:
ftsata2

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Error
Event Source: DCOM
Event Category: None
Event ID: 10010
Date: 10/21/2008
Time: 8:12:57 PM
User: NT AUTHORITY\SYSTEM
Computer: GARY
Description:
The server {C7E39D60-7A9F-42BF-ABB1-03DC0FA4F493} did not register with DCOM within the required timeout.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


I really hope this event log can help. Please keep in mind, I'm not as knowledgeable with comps as most people on here and can't do extremely tough tasks.
Thanks

 

My computor began constantly rebooting about 2 months ago. Sometimes I could use, then for no reason in the middle of what I was doing it would again reboot by itself.
In short, I finally got aggravated with this & brought it to the shop.
It had picked up a Trojan when I dn/lded the weather channel for your desktop form the Weather Channel web site. I was running virus protection at the time & it picked it up & blocked it or so I thought.
When brought to the shop that is what they found and removed.
I don;t know enough to say this is your problem, but what you are describing is what mine was doing each time I used it.