PC Blackout Issue

Would http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016 be a good new PSU (as in, would it fit in the case according to the case specifications that you can find in the detailed specs link from the original post)? Also what kind of RAM setup can I replace my current RAM with, it's a very cheap setup that Dell did on the prebuilt PC. 2 x Hyundai Electronics 2GB DDR3 RAM in slot 1 and 3, and then Samsung 1GB DDR3 Ram in slot 2 and 4 so 2+1+2+1 = 6 GB RAM total in a very bad manner. What is a good RAM setup for my motherboard? The exact model is a Dell Inc. Manufactured 0T568R A00 Motherboard with the Southbirdge being an Intel H57 Chipset as mentioned in the first post. Could I try to save a bit on the new RAM by going quad channel and just getting 4x 2GB DDR3 Kingston sticks for example ? I think new RAM would be a good idea as the current RAM seems very cheap and from bad brands but I also don't want to spend $150 total on two 4GB RAM sticks.

Ok so since this I have gotten a Corsair CX600 (600 W) Power Supply to replace the crappy OEM 350 Watt Chicony power supply, and also have replaced the crappy OEM Hyundai 2x2GB and Samsung 2x1GB sticks to just two Kingston HyperX Blu 2x 4GB in my dual channel memory. http://www.newegg.com/Product/Product.aspx?Item=N82E16820104238. My computer is STILL blacking out. I was trying to check the system log around the time of the blackout. ~12:40PM-12:41PM EST on Saturday, August 31, 2013 while playing a game (league of legends). The sound was still going on by the way, so I guess the process was still running just the screen had gone black and the monitors annoying power save mode box popped up for a second and goes away. No amount of clicking or typing will do anything to bring the screen back up though.

Note the second event logs says the shutdown at 12:40:16 was unexpected, this is probably when I manually shut down the computer by holding down the power button. Actually there were no errors right before I shut down the computer manually where the computer blacked out...so I have no idea what component could have actually caused the problem. It's very confusing. People might say to replace my graphics card but then what if I do and the problem still occurs? It's very frustrating to not be able to pinpoint the source of this problem.

Event log:
Log Name: System
Source: Microsoft-Windows-Kernel-PnP
Date: 8/31/2013 12:41:26 PM
Event ID: 219
Task Category: (212)
Level: Warning
Keywords:
User: SYSTEM
Computer: Pandya-PC
Description:
The driver \Driver\UBHelper failed to load for the device IDE\CdRomTSSTcorp_DVD+-RW_TS-H653G_______________DW10____\4&363f6ebe&0&0.1.0.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-PnP" Guid="{9C205A39-1250-487D-ABD7-E831C6290539}" />
<EventID>219</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>212</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2013-08-31T16:41:26.216003100Z" />
<EventRecordID>458444</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>Pandya-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="DriverNameLength">76</Data>
<Data Name="DriverName">IDE\CdRomTSSTcorp_DVD+-RW_TS-H653G_______________DW10____\4&amp;363f6ebe&amp;0&amp;0.1.0</Data>
<Data Name="Status">3221226348</Data>
<Data Name="FailureNameLength">16</Data>
<Data Name="FailureName">\Driver\UBHelper</Data>
<Data Name="Version">0</Data>
</EventData>
</Event>

Log Name: System
Source: EventLog
Date: 8/31/2013 12:41:45 PM
Event ID: 6008
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Pandya-PC
Description:
The previous system shutdown at 12:40:16 PM on ‎8/‎31/‎2013 was unexpected.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="EventLog" />
<EventID Qualifiers="32768">6008</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2013-08-31T16:41:45.000000000Z" />
<EventRecordID>458446</EventRecordID>
<Channel>System</Channel>
<Computer>Pandya-PC</Computer>
<Security />
</System>
<EventData>
<Data>12:40:16 PM</Data>
<Data>‎8/‎31/‎2013</Data>
<Data>
</Data>
<Data>
</Data>
<Data>276218</Data>
<Data>
</Data>
<Data>
</Data>
<Binary>DD07080006001F000C00280010001101DD07080006001F0010002800100011013C0000003C00000000000000000000000000000000000000010000009DCB0100</Binary>
</EventData>
</Event>