WIthout proper system info and crash logs nobody can tell you anything.
I'm running on a Dell 8500 w/ a 2 TB hard drive.
I've run DM Log Collector and have a zip file with the results, but I don't see how to attach it to my post.
OS Name Microsoft Windows 7 Home Premium Version 6.1.7601 Service Pack 1 Build 7601 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name LAURIE-PC System Manufacturer Dell Inc. System Model XPS 8500 System Type x64-based PC Processor Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz, 3401 Mhz, 4 Core(s), 8 Logical Processor(s) BIOS Version/Date Dell Inc. A12, 8/28/2013 SMBIOS Version 2.7 Windows Directory C:\Windows System Directory C:\Windows\system32 Boot Device \Device\HarddiskVolume1 Locale United States Hardware Abstraction Layer Version = "6.1.7601.17514" User Name Laurie-PC\Laurie Time Zone Mountain Daylight Time Installed Physical Memory (RAM) 12.0 GB Total Physical Memory 12.0 GB Available Physical Memory 8.69 GB Total Virtual Memory 23.9 GB Available Virtual Memory 20.2 GB Page File Space 12.0 GB Page File C:\pagefile.sys
Applications cannot cause the entire system to shutdown, reboot, or hang.
Only bugs in the OS, bugs in low level drivers, or defective hardware can cause that.
Apparently you spoke to someone at Dell without much system troubleshooting experience, who mistakenly tried to blame application software for something that application software cannot do.
The most common cause we see is defective RAM, followed by defects in VRAM, GPUs, motherboard, power supplies and CPUs.
But every once in a while, someone ships a bad driver that causes kernel panics (bluescreens) or shutdowns.
To find the actual cause, someone would have to swap out components, or check the hardware diagnostic state on the system (the BIOS records why it shut down), and worse case monitor the power feeds to different components for defects (this takes a bit more equipment and time, but has been necessary in the case of some defective motherboard designs).