Android tablet stuck on logon screen

[nipuna]

Hey..I have a MID 1018 tablet. It was rooted. One day I installed a font application to it. After installing it said to restart. So I switched the tablet off and turn it on again. But the tab got stuck in the log on screen (where the word android flashes). So I tried to turn it off but I couldn't. But after entering a pin to reset hole I could turn in off.But the problem is still it stuck at log on. (At this time USB debugging mode was disabled.....) I have tried to enter recovery modes through pressing different keys, but failed so far. Please help me

 

[nipuna]

Detailed product Information Picture
Color Black+ Black, White+White
Processer "Rockchip 3066 Dual core 1.6 G,
Mali 400 "
Display 10.1 "screen:1024*600
Nand Flash "8GB
extended to 32GB by TF card"
RAM 1GB
Touch Screen Capacitive touch screen
Socket/Jack 1*USB OTG
1*HDMI Jack
1* TF cardreader
1*DC-in jack, 1x 3.5mm stereo headphone jack
Pictures Detailed product Information
Wifi 802.11b/g/n
3G USB external 3G
Bluetooth Available
HDMI Mini HDMI Port
Bluetooth Available
Camera 0.3MP Front + 2.0MP Rear
Battery Lithium-ion Polymer 7000mAh/ 3.7V
O/S ANDROID 4.1 , Support Adobe flash 11.0
"Graphics
accelerator" 2D/ 3D/ OpenGL ES2.0(AMD Z430)/ OpenVG1.1(AMD Z160)@27M Tri/sec
Audio Support AAC, AAC+, eAAC+, AMR-NB, AMR-WB, QCP, MP3, WMA, WAV, MIDI, M4A
Video Support H.264,VP8,RV,WMV,AVS,H.263,MPEG4 etc1080P、YouTube、720P、HTML5、Flash11,Support all video formats
Software Application Google Search/Camcorder/camera/Email Gmail/Video Player/Audio Player/Alarm/Clock /Apk Calculator Calendar/ES file/Explorer/ES Task Manager /Google Maps Market/NC Manager PDF/Reader /Photo Browser
Accessories 1*OTG cable, 1*Standard Charger

1* Mini-USB Cable 1* Instruction Manual

 

[nipuna]

one more thing play store identified my tablet as rockchip 1018.
And in the back of the tablet there is a sticker saying "model 101B BARCODE 7H20130602554