How can I upgrade my HP Pavillion a6030n?

[JasonSandeman]

I currently own a system, but I think that it's a shame to throw the baby out with the bathwater. Before I commit to buying a system and throwing this one out, is there any way that I can update it?
Here is what I am looking to do/currently am doing:
I use the computer as my main entertainment center. I have it hooked up to a 42" samsung TV (and I would prefer to upgrade the TV later to a 4K television...) through an HDMI connection from my video card. I mostly watch Netflix, and download whatever other content that I watch. I do some light gaming, mostly with MAME, or some MMORGS like D&D online, and perhaps GTA4 when I get a hankering to do so.
I am not looking for a system that is cutting edge, nor do I want/need to drop 4K on a badass system that truth be told, I won't really maximize the use from. (Besides, I already own a Wii, and a WiiU for platform gaming.)
Here are my specs through the Belarc to give an idea. I am looking to maybe spend 500-1K on upgrades, and if the option was there - keep my current hardware (RAM, Hard drives) but I am not adverse to changing the mobo and CPU, and graphics cards.
The only issues right now is playback stutters a bit, and the sound is crap (but it could be my TV, or the computer.)
The USB ports sometimes crap out too, but I am not sure how to fix that.

System Specs:
HP-Pavilion RX887AA-ABA a6030n
System Serial Number: MXX71405BX
Enclosure Type: DesktopProcessor a Main Circuit Board b2.50 gigahertz AMD Athlon 64 X2 Dual Core
256 kilobyte primary memory cache
1024 kilobyte secondary memory cache
64-bit ready
Multi-core (2 total)
Not hyper-threaded Board: ECS Nettle 1.0
Bus Clock: 201 megahertz
BIOS: Phoenix Technologies, LTD 5.05 03/09/2007Drives Memory Modules c,d2500.38 Gigabytes Usable Hard Drive Capacity
697.80 Gigabytes Hard Drive Free Space

DTSOFT Virtual CdRom Device [Optical drive]
HL-DT-ST DVDRRW GSA-H20L ATA Device [Optical drive]

Generic- Compact Flash USB Device [Hard drive] -- drive 2
Generic- MS/MS-Pro USB Device [Hard drive] -- drive 5
Generic- SD/MMC USB Device [Hard drive] (2.06 GB) -- drive 4
Generic- SM/xD-Picture USB Device [Hard drive] -- drive 3
ST1000DM 003-1CH162 SCSI Disk Device (1000.20 GB) -- drive 0, s/n Z1D5ARNT, SMART Status: Healthy
ST315003 41AS SCSI Disk Device (1500.30 GB) -- drive 1, s/n 9VS1LVVN, SMART Status: Healthy 8192 Megabytes Usable Installed Memory

Slot 'A0' has 2048 MB
Slot 'A2' has 2048 MB
Slot 'A4' has 2048 MB
Slot 'A6' has 2048 MB Local Drive Volumes c: (NTFS on drive 0) *999.84 GB67.33 GB freed: (NTFS on drive 1)209.71 GB43.13 GB freee: (NTFS on drive 1)372.77 GB165.60 GB freef: (NTFS on drive 1)413.67 GB122.23 GB freeg: (NTFS on drive 0)367 MB336 MB freeh: (NTFS on drive 1)262.15 GB123.77 GB freei: (FAT32 on drive 1)241.89 GB175.41 GB free


Controllers DisplayATA Channel 0 [Controller]
ATA Channel 1 [Controller]
Standard Dual Channel PCI IDE Controller NVIDIA GeForce GT 610 [Display adapter]
SAMSUNG [Monitor] (7.2"vis, November 2008)Bus Adapters MultimediaNVIDIA nForce Serial ATA Controller (2x)
Standard Enhanced PCI to USB Host Controller
Standard OpenHCD USB Host Controller NVIDIA High Definition Audio
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)
Realtek High Definition AudioVirus Protection [Back to Top] Group Policiesavast! Antivirus None discoveredCommunications Other DevicesPCI Soft Data Fax Modem with SmartCP

Microsoft ISATAP Adapter? NVIDIA nForce 10/100 Mbps Ethernet primary Auto IP Address: 192.168.2.16 / 24Gateway: 192.168.2.1Dhcp Server: 192.168.2.1Physical Address: 00:19:21:C7:BC:67Connection Speed: 100 MbpsTeredo Tunneling Pseudo-Interface Networking Dns Server: 192.168.2.1 VIA 1394 OHCI Compliant Host Controller
HID-compliant consumer control device (2x)
HID-compliant device (3x)
USB Input Device (4x)
HID Keyboard Device
Standard PS/2 Keyboard
HID-compliant mouse
USB Composite Device (2x)
USB Mass Storage Device
USB Root Hub (2x)
Generic volume shadow copy
K:\
L:\
M:\
N:\

I updated the power supply when I first got the computer, I believe it is a 600W supply. Also, the RAM is Crucial's 8 x 2GB DDR2 PC2-6400 Unbuffered NON-ECC 1.8V 256Meg x 64
I hope this helps. I am not 100% sure where to start, but I think thsi is the best site to see....

 

[popatim]

If its still doing what you want then you dont have a need to upgrade. save your money because when you do have to upgrade, it will be a whole system.

 

[USAFRet]

Personally, I wouldn't spend any money on that. Save up for a whole new one, and repurpose this one into just a movie player and/or house file sharing/backup box.

 

[iballew]

The best cpu your motherboard supports is already in your computer. I recommend buying an am3+ motherboard, getting a fx 6300, and getting a better graphics card. The motherboard I chose has slots for your old ddr2 ram thats in your machine now as well as ddr3 slots if you want to upgrade. The 6300 will easily handle any gaming/movie watching you throw at it. If you dont want to upgrade your psu, the best you can get is a gtx 750 ti. It is great for mild gamers and can play modern games at med/high settings. If you dont want to spend as much on the gpu, you can always just get the regular gtx 750.

cpu: http://www.amazon.com/AMD-FD6300WMHKBOX-FX-6300-6-Core-Processor/dp/B009O7YORK/ref=sr_1_2?s=electronics&ie=UTF8&qid=1421878481&sr=1-2&keywords=fx+4300&pebp=1421878472970&peasin=B009O7YORK

Motherboard: http://www.amazon.com/ASRock-AM2-AM3-Motherboard-960GC-GS-FX/dp/B00F0PLQDK/ref=sr_1_1?s=pc&ie=UTF8&qid=1421878351&sr=1-1&keywords=ddr2+am3+motherboard&pebp=1421878345010&peasin=B00F0PLQDK

graphics card: http://www.amazon.com/Zotac-NVIDIA-GeForce-PCI-Express-ZT-70601-10M/dp/B00IFZ547Q/ref=sr_1_7?s=electronics&ie=UTF8&qid=1421878711&sr=1-7&keywords=gtx+750+ti&pebp=1421878720668&peasin=B00IFZ547Q

Cheaper graphics card: http://www.amazon.com/EVGA-GeForce-Dual-Link-Graphics-01G-P4-2751-KR/dp/B00IDG3NDY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1421878792&sr=1-1&keywords=gtx+750&pebp=1421878796557&peasin=B00IDG3NDY