Chayan4400 :
Found it. It's made by a company called ATNG POWER CO LTD. Probably an OEM.
So far, what I can gather is that they make (Or made) low end PSUs for Rosewill most notably, along with some smaller brands.
From a 2009 HardOCP Review -
ATNG Power Co. LTD (I Horng Power Co. LTD.) is one of the larger providers of power supplies in various markets including the US and is fairly well known to many users. As a company ATNG has been in business since 1987 and currently has a production capacity of ~900,000 units a month. ATNG branded power supplies can be found under other brands such as Rosewill, older BFGTech models, Coolmax, StarTech.com, some ABS, the ATNG brand itself, and others. Typically ATNG power supplies have not been what most users have considered to be a premier product offering but with the increased competition in the power supply market of late ATNG has released a number of new products that are of great interest to us including today’s Nexus branded unit.
http://www.hardocp.com/article/2009/12/21/nexus_rx6300_630w_power_supply_review/1#.VnWnA1YdBuA
Everything I can find on ATNG dates back to around 2009. Looks like not many companies use them as OEMs now. I''m inclined to think CyberPower gets PSUs custom made for them from ATNG, unlike other PC builders that use what is on the market.
In any case, replace it ASAP. Give us your PC specs so we can recommend a cheap but good PSU.
BLKFRISALE1: CyberpowerPC Gaming Mouse Pad [+0]
BLKFRISALE2: TP-LINK 802.11 AC Archer T1U AC450 Wireless 5GHz 433Mbps Nano USB Adapter [+0]
BLKFRISALE3: ZALMAN ZM-HPS200 Gaming Headset [+0]
BLUETOOTH: None
CABLE: None
CAS: Cooler Master N600 w/ USB 3.0, Side Panel Window [+30]
CASUPGRADE: RGB Multiple Color LED Strip with Remote Controller
CC: None
CD: 24X Double Layer Dual Format DVD+-R/+-RW + CD-R/RW Drive (BLACK COLOR)
CD2: None
COOLANT: Standard Coolant
CPU: Intel® Core™ i7-6700K 4.00GHZ 8MB Intel Smart Cache LGA1151 (Skylake) [+116]
CS_FAN: Default case fans
DOCKINGSTATION: None
ENGRAVING: None
FA_HDD: None
FAN: Asetek 550LC 120mm Liquid Cooling CPU Cooler - Extreme Cooling Performance (Single Standard 120MM Fan)
FLASHMEDIA: None
FREEBIE_CU: FREE $50 Amex Gift Card with selected Intel Core I7 and Intel Core I5 Desktops and Laptops
FREEBIE_HD: None
HD_M2PCIE: None
HD_M2SATA: None
HDD: 128GB SanDisk SSD + 1TB SATA III Hard Drive Combo [+43] (Combo Drive)
HDD2: None
HEADSET: None
HS_HANGER: None
IUSB: Built-in USB 2.0 Ports
KEYBOARD: CYBERPOWERPC Skorpion K1 Mechnical Gaming Keyboard w/ Kontact Blue Switches and Programmable Blue LED Lighting [-5]
MEMORY: 8GB (4GBx2) DDR4/2800MHz Dual Channel Memory (ADATA XPG Z1)
MONITOR: None
MOPAD: None
MOTHERBOARD: ASUS Z170-PRO GAMING ATX w/ USB 3.1, 3 PCIe x16, 3 PCIe x1, 1 SATA Express, 4 SATA3, 1 Ultra M.2 [+9]
MOUSE: AZZA Optical 1600dpi Gaming Mouse with Weight Adjustable Cartridge
NETWORK: Onboard Gigabit LAN Network
NFC: None
OS: Windows 10 Home (64-bit Edition)
OVERCLOCK: No Overclocking
POWERSUPPLY: 800 Watts - Standard 80 Plus Certified Power Supply - SLI/CrossFireX Ready [-4]
RUSH: NO Rush: All Orders placed before 12/4/2015 11:59PM PST guarantee delivery by Christmas
SERVICE: STANDARD WARRANTY: 3-YEAR [3 Year Labor, 1 Year Parts] LIMITED WARRANTY PLUS LIFE-TIME TECHNICAL SUPPORT
SLI_BRIDGE: None
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
SPEAKERS: None
TEMP: None
TUNING: None
TVRC: None
USBHD: None
USBX: None
VIDEO: AMD Radeon R9 390X 8GB GDDR5 PCIe 3.0 x16 Video Card [+206] (Single Card)